In Reply to: Formula for storage in a PSU in Joules? And what about the effect of chokes?? posted by Timbo in Oz on April 13, 2007 at 21:14:55:
The formula is the same:Joules = 1/2C(E*E) for capacitance and 1/2L(E*E) for inductance. Inductors store energy but the voltage and current phase relationship is opposite compared to capacitors. I thinks this means that the energy storage is not additive or subtractive, it is shared. In a resonant circuit the energy is passed back and forth between the two. Only parasitic losses or intentional loading remove the energy and dampen the oscillation.
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Follow Ups
- Re: Formula for storage in a PSU in Joules? And what about the effect of chokes?? - beermanpete@socal.rr.com 21:35:17 04/13/07 (4)
- No, inductor energy is 1/2 * L * (I * I) - Al Sekela 15:22:56 04/14/07 (0)
- Isn't that 1/2LI^2? - Russ57 07:19:00 04/14/07 (1)
- Re: Isn't that 1/2LI^2? - tomservo 13:51:25 04/14/07 (0)
- so That's why CLCLC psu's work so well, as the Ayre designer clearly knows - Timbo in Oz 21:56:13 04/13/07 (0)